THE TEMNOSPONDYLOUS AMPHIBIA. 1 87 



the nostrils are less definite and satisfactory than the remains of the orbits, but the 

 latter appear to be decisive against the piscine nature of the fossil. The fossil also 

 presents the same well-marked external sculpturing as in the labyrinthodonts ; and 

 among the genera that have been established in that family, the form of the end of 

 the muzzle, or upper jaw, in the Pictou coal specimen best accords with that in the 

 Capitosaurus and Metopias of von Meyer and Burmeister (80). 



Measurements of the Skull of Baphetes planiceps Owen. 

 (Type in the British Museum of Natural History, London.) 



mm. mm. 



Approximate median length of skull 136 Width of skull across orbits 97 



Width of skull across base of horns 150 Diameter of orbit 21 



Estimated width across tips of horns 186 Diameter of large tooth alveolus 7 



Width of horn at base 31 Diameter of small tooth alveolus 2 



Estimated length of horn from base 80 



Pictou Coal, near Pictou, Nova Scotia, Canada, collected by Dr. J. William 

 Dawson, 1850, and presented by him to the Geological Society of London. 



Baphetes minor Dawson. 

 Dawson, Canadian Nat. and Jour. .Sci., n. s., 1S70, v, pp. 98, 99. 



Type: Specimen in the Peter Redpath Musetun, McGill University. 



Horizon and locality: Coal formation of Nova Scotia. 



The species was based on a lower jaw of an amphibian, of which a cast had 

 occurred in the coarse sandstone of the coal formation between Ragged Reef and 

 the Joggins Coal Mine. It measured 6 inches in length; its surface was marked on 

 the lower and posterior part with a network of ridges inclosing rounded depressions. 

 The anterior part of the jaw contained about i6 teeth, some of which remained in 

 the matrix. These were stout, conical and blunt, with large pulp cavities, and 

 about 32 longitudinal striae, corresponding to the folds of the dentine. Dawson 

 states that this jaw resembles most closely those of Baphetes and Dendrerpeton, but 

 more especially the former. He regarded it as distinct from Baphetes planiceps, 

 and proposed for it the name Baphetes minor. 



Eosaurus acadianus Marsh. 



M.'VRSH, Am. Jour. Sci. (2), x.xxiv, pp. 1-16, pis. i, ii, 1862. 



.\gassiz, Am. Jour. Sci., x.xxiii, p. 138, 1862. 



Marsh, Quart. Tour. Geo!. Soc., xix, pp. 52-56. 



Hay, Cat. Fossil Vertebrates (BuU- U. S. Geol. Surv. No. 179, p. 421, 1902). 



Type: Specimen No. 1648, Yale University Museum. 



Horizon and locality: South Joggins, Nova Scotia (Coal Measures). 



The genus and species are founded on two vertebral bodies of the stereospondy- 

 lous type from the Coal Measures of the South Joggins, Nova Scotia. Marsh's 

 description (404) is as follows: 



"The general form of the vertebras is cylindrical, but their sides are compressed ob- 

 liquely, which gives to the contour of the centra a subhexagonal appearance. They are 

 much flattened in the direction of the anteroposterior diameter, which has to the transverse 



